ASTM E2501-11(2022)
(Specification)Standard Specification for Light Source Products for Inspection of Fluorescent Coatings
Standard Specification for Light Source Products for Inspection of Fluorescent Coatings
ABSTRACT
This specification provides the requirements for light source products intended for excitation of fluorescent materials used as a system for detection of defects in industrial coatings. This includes the examination of both longer wavelength fluorescing primer coatings as well as non-fluorescent top coatings. Also, this specification establishes the radiometric requirements of the light source product in terms of required wavelength range and minimum irradiance. Safety requirements shall be established for the light source product necessary to ensure the product will not pose a threat to visual health. Irradiance test method shall be performed to conform to the specified requirements, in accordance to the test method.
SIGNIFICANCE AND USE
4.1 Light source products conforming to this specification are intended to be used in conjunction with coatings specially formulated with fluorescent colorants as a system for the visual detection of defects in industrial protective coatings.
4.2 Visible fluorescence from the coating enhances the contrast of coating irregularities and defects and is produced by excitation of visible-activated fluorescent colorants in the coating.
4.3 Light source products with defined wavelength and intensity properties are required to produce adequate visible fluorescence for easy visual location of defects.
4.4 A light source product is considered to consist of a light source component incorporated into an optical, electrical, mechanical, and power supply system that makes it suitable for use in an industrial environment. The entire light source product is subject to this standard. The light source component and any subassemblies of the light source product are not subject to this standard.
4.5 This specification is limited to light source products providing excitation in the range from 400 nm to 420 nm.
SCOPE
1.1 This specification provides the requirements for light source products intended for excitation of fluorescent materials used as a system for detection of defects in industrial coatings. This includes the examination of both longer wavelength fluorescing primer coatings as well as non-fluorescent top coatings.
1.2 This specification establishes the radiometric requirements of the light source product in terms of required wavelength range and minimum irradiance.
1.3 This specification establishes safety requirements for the light source product necessary to ensure the product will not pose a threat to visual health.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E2501 −11 (Reapproved 2022)
Standard Specification for
Light Source Products for Inspection of Fluorescent
Coatings
This standard is issued under the fixed designation E2501; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E1341 Practice for Obtaining Spectroradiometric Data from
Radiant Sources for Colorimetry
1.1 This specification provides the requirements for light
G138 Test Method for Calibration of a Spectroradiometer
source products intended for excitation of fluorescent materials
Using a Standard Source of Irradiance
used as a system for detection of defects in industrial coatings.
2.2 IEC Standards:
This includes the examination of both longer wavelength
IEC 62471-2:2006 Edition 1—Photobiological Safety of
fluorescing primer coatings as well as non-fluorescent top
Lamps and Lamp Systems
coatings.
2.3 ANSI Standards:
1.2 This specification establishes the radiometric require-
ANSI/IESNA RP27.3-2005 Photobiological Safety for
ments of the light source product in terms of required wave-
Lamps and Lamp Systems — General Requirements
length range and minimum irradiance.
ANSI/ISEA Z87.1 Occupational and Educational Personal
1.3 Thisspecificationestablishessafetyrequirementsforthe
Eye and Face Protection Devices
light source product necessary to ensure the product will not
pose a threat to visual health.
3. Terminology
1.4 The values stated in SI units are to be regarded as
3.1 Definitions—The definitions of terms in Terminology
standard. No other units of measurement are included in this
E284 are applicable to this standard.
standard.
4. Significance and Use
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4.1 Light source products conforming to this specification
responsibility of the user of this standard to establish appro- are intended to be used in conjunction with coatings specially
priate safety, health, and environmental practices and deter-
formulated with fluorescent colorants as a system for the visual
mine the applicability of regulatory limitations prior to use.
detection of defects in industrial protective coatings.
1.6 This international standard was developed in accor-
4.2 Visible fluorescence from the coating enhances the
dance with internationally recognized principles on standard-
contrastofcoatingirregularitiesanddefectsandisproducedby
ization established in the Decision on Principles for the
excitation of visible-activated fluorescent colorants in the
Development of International Standards, Guides and Recom-
coating.
mendations issued by the World Trade Organization Technical
4.3 Light source products with defined wavelength and
Barriers to Trade (TBT) Committee.
intensity properties are required to produce adequate visible
fluorescence for easy visual location of defects.
2. Referenced Documents
4.4 Alight source product is considered to consist of a light
2.1 ASTM Standards:
source component incorporated into an optical, electrical,
E284 Terminology of Appearance
mechanical,andpowersupplysystemthatmakesitsuitablefor
use in an industrial environment. The entire light source
product is subject to this standard. The light source component
This specification is under the jurisdiction of ASTM Committee E12 on Color
and Appearance and is the direct responsibility of Subcommittee E12.05 on
and any subassemblies of the light source product are not
Fluorescence.
subject to this standard.
Current edition approved Oct. 1, 2022. Published November 2022. Originally
approved in 2006. Last previous edition approved in 2017 as E2501 – 11 (2017).
DOI: 10.1520/E2501-11R22.
2 3
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